45 lines
1.6 KiB
C++
45 lines
1.6 KiB
C++
#include "fsfw/tcdistribution/PusPacketChecker.h"
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#include "fsfw/globalfunctions/CRC.h"
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#include "fsfw/serviceinterface/ServiceInterface.h"
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#include "fsfw/tcdistribution/definitions.h"
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#include "fsfw/tmtcpacket/pus/tc/PusTcReader.h"
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PusPacketChecker::PusPacketChecker(uint16_t setApid, ccsds::PacketType packetType_,
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ecss::PusVersion pusVersion_)
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: CcsdsPacketCheckerBase(setApid, packetType_), pusVersion(pusVersion_) {}
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ReturnValue_t PusPacketChecker::checkPacket(PacketCheckIF* pusPacket, size_t packetLen) {
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if (pusPacket == nullptr) {
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return RETURN_FAILED;
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}
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// Other primary header fields are checked by base class
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if (not pusPacket->hasSecHeader()) {
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return tcdistrib::INVALID_SEC_HEADER_FIELD;
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}
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uint16_t calculated_crc =
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CRC::crc16ccitt(pusPacket->getFullData(), pusPacket->getFullPacketLen());
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if (calculated_crc != 0) {
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return tcdistrib::INCORRECT_CHECKSUM;
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}
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// This assumes that the getFullPacketLen version uses the space packet data length field
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if (pusPacket->getFullPacketLen() != packetLen) {
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return tcdistrib::INCOMPLETE_PACKET;
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}
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if (pusPacket->getPusVersion() != pusVersion) {
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return tcdistrib::INVALID_PUS_VERSION;
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}
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return RETURN_OK;
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}
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uint16_t PusPacketChecker::getApid() const { return apid; }
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ReturnValue_t PusPacketChecker::checkPacket(SpacePacketReader* currentPacket, size_t packetLen) {
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ReturnValue_t result = CcsdsPacketCheckerBase::checkPacket(currentPacket, packetLen);
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if (result != HasReturnvaluesIF::RETURN_OK) {
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return result;
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}
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return checkPacket(dynamic_cast<PacketCheckIF*>(currentPacket), packetLen);
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}
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